| Theme | Fluid Mechanics, Venturi effect |
| Category | Physics Experiments |
| Short description | This experiment is carried out in the Alcobendas Science Museum, in one of the experiments in the interactive area. Through this experiment you can experience the pressure variation that occurs in the air as the area of the section through which it passes increases. |
WHAT THE EXPERIMENT CONSISTS OF
This experiment consists of the demonstration, which you can experience with your own hands, of the Venturi effect. The Venturi effect (in short) is an effect by which a liquid or gas (such as air) can create a suction. To do this it is only necessary to modify the area of the section through which it passes. Just as it can create a suction it can also create a pressure force if the area is enlarged.
Although the applications of the Venturi effect are suction applications, in this experiment we are going to look at the case in which an overpressure is generated.
Step 1. The experiment consists of an open duct with a ball. As soon as the button is pressed, a jet of air comes out of the bottom part.
Step 2. Press the button and the ball rises due to the air pressure.
Step 3. We try to push the ball out of the centre but we see that there is a supporting force that prevents the ball from leaving the centre.
VIDEO EXPERIMENT
You can watch the video experiment here:
EXPLANATION OF THE VENTURI EFFECT
You have all the technical explanation (with equations) and basics here: Venturi effect
Applied to the experiment the explanation is:
